How to take the class of the element that wasn't html a js

[shizuka]

I need to get a class of element that created the JS already tried nothing, className and setattribute

let variants = [1, 2];
let start = document.getElementById("Start");
let br = document.createElement("br")
let i;
function StartGame() {

start.hidden = true;

for (i = 0; i < 15; i++) {

let butt = document.createElement("button");

butt.classList.add("butt")

butt.innerHTML = "0";

document.body.append(butt);
};

};

/*if(i === 15){

i = 0;

document.body.append(br);

};

*/

function randomInteger(min, max) {

let rand = min - 0.5 + Math.random() * (max - min + 1);

return Math.round(rand);

}

let butts = document.querySelectorAll(".butt");

butts.onclick = function() {

alert(randomInteger(1, 3));

}

[kalyn]

let variants = [1, 2];
let start = document.getElementById("Start");
let br = document.createElement("br")
let i;
function StartGame() {

//start.hidden = true;

for (i = 0; i < 15; i++) {

let butt = document.createElement("button");

butt.classList.add("butt")

butt.innerHTML = "0";

document.body.append(butt);

};
document.querySelectorAll('.butt').forEach((el) => {

el.addEventListener('click', () => {

alert(randomInteger(1, 3));

});

});

};
function randomInteger(min, max) {

let rand = min - 0.5 + Math.random() * (max - min + 1);

return Math.round(rand);

}
StartGame();

.butt {

border: qpx solid blue;

}

---

let variants = [1, 2];

let start = document.getElementById("Start");

let br = document.createElement("br")

let i;

function StartGame() {

//start.hidden = true;

for (i = 0; i < 15; i++) {

let butt = document.createElement("button");

butt.classList.add("butt")

butt.innerHTML = "0";

document.body.append(butt);

};

};
function randomInteger(min, max) {

let rand = min - 0.5 + Math.random() * (max - min + 1);

return Math.round(rand);

}
// Через делегирование

document.addEventListener('click', event => {

if (event.target.className === 'butt') {

alert(randomInteger(1, 3));

}

});
StartGame();

.butt {

border: qpx solid blue;

}